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Finding the Fourth Proportional to 74,011.88, 102,136.40 and 40,477.88

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Solution

The fourth proportional to 74,011.88, 102,136.40 and 40,477.88 is: 55,859.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,011.88 : 102,136.40 = 40,477.88 : x
  2. Step 2: Convert to fraction form
    74,011.88/102,136.40 = 40,477.88/x
  3. Step 3: Cross multiply
    74,011.88x = 102,136.40 × 40,477.88
  4. Step 4: Simplify right side
    74,011.88x = 4,134,264,229.76
  5. Step 5: Solve for x
    x = 4,134,264,229.76/74,011.88
  6. Step 6: Final answer
    x = 55,859.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.